In some copies of the text, he is born on the day the First Temple is destroyed.
[1] A wind carried him to the city of Nineveh (representing Rome), where he remains waiting for the end days.
He is presented as having a despicable, broken down image and to be in pain.
[3] Pirke De-Rabbi Eliezer, like the Sefer Zerubbabel, refers to Menahem ben Ammiel.
According to the Zohar and the Sefer Zerubbabel, Menahem is the Messiah ben David.